package com.atguigu.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @author : leimingchao
 * @date Date : 2022年02月09日 23:57
 */
@Service
public class PaymentService {

    /**
     * 正常访问，肯定OK
     * @param id
     * @return
     */
    public String paymentInfo_OK(Integer id) {
        return "线程池：" + Thread.currentThread().getName() + " paymentInfo_OK,id:" + id + "\t" + "O(∩_∩)O哈哈~";
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_TimeoutHandler",commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value = "5000")
    })
    public String paymentInfo_Timeout(Integer id) {

        //int age = 10 / 0;
        try {
            TimeUnit.MILLISECONDS.sleep(3000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池：" + Thread.currentThread().getName() + " paymentInfo_Timeout,id:" + id + "\t" + "O(∩_∩)O哈哈~" + " 耗时(秒)"  + "秒钟";
    }

    public String paymentInfo_TimeoutHandler(Integer id) {
        return "线程池：" + Thread.currentThread().getName() + " 8001系统繁忙或者运行报错，请稍后再试,id:" + id + "\t" + "o(╥﹏╥)o";
    }

    //=====================================服务熔断

    @HystrixCommand(
            fallbackMethod = "paymentCircuitBreaker_fallback",
            commandProperties = {
                    //是否开启断路器
                    @HystrixProperty(name = "circuitBreaker.enabled", value = "true"),
                    //请求次数
                    @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"),
                    //时间窗口期
                    @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"),
                    //失败率达到多少后跳闸
                    @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60")
            }
    )
    public String paymentCircuitBreaker(@PathVariable(value = "id") Integer id) {
        if (id < 0) {
            throw new RuntimeException("******id 不能为负数");
        }
        String serialNumber = IdUtil.simpleUUID();

        return Thread.currentThread().getName() + "\t" + "调用成功，流水号：" + serialNumber;
    }

    public String paymentCircuitBreaker_fallback(@PathVariable(value = "id") Integer id) {
        return "id 不能为负数，请稍后再试，o(╥﹏╥)o   id：" + id;
    }
}
